Sometimes they're tough even when you hit them right. I once shot a doe just behind the shoulder where the colors come together with my 250 savage and 100gr Ballistic Tip at 200yds. She ran a half circle and stopped at just shy of 400yds and stood there. "WTF?" says I. I sat down, carefully lined up another shot and put another one right through the lungs. She runs100yds and falls over dead. When I looked her over she was well and truly shot with the first bullet, dead on her feet. She just didn't know it. Tough old biddy that goat was.